A small brush fire threatened more than a dozen homes on Cajon View Drive, south of El Cajon, Thursday evening.
Multiple crews from neighboring regions responded when the fire sparked around 7:35 p.m. near Avocado Avenue and Alzeda Drive, south of central El Cajon.
Ten to 15 homes were threatened as the fire grew, but an hour later, crews contained the fire and mitigated the structure threat.
Avocado Avenue was reopened between Chase Avenue and Fuerte Drive.
The cause of the fire remains under investigation. Investigators believe it may have been caused by an object thrown from a vehicle, based on a report made to police officers.
"Three vehicles were ahead of me as I was going up the hill; something bright caught my eye. Immediately the brush exploded in flames. So we pulled over and called 911," said witness Allan Hendrie.
Investigators would not comment on if an object was found and told NBC 7 it was still very much an active investigation.
